Fix WINEARCH preservation in wine bottle management

Preserve explicitly set WINEARCH variables instead of unsetting them
in wine environment functions. This ensures that installers setting
WINEARCH="win32" are properly respected for architecture selection.

Changes:
- Remove unset WINEARCH from get_bottle() and set_wine_env()
- Add comments explaining WINEARCH preservation
- Update debug messages to show current WINEARCH value

.includes/bottle.sh

@@ -13,12 +13,11 @@ get_bottle() {
         export WINESERVER="$wine32server"
         # Also prepend to PATH for regular wine calls
         export PATH="${wine32%/*}:$PATH"
-        # Unset WINEARCH to avoid conflicts with system wine
-        unset WINEARCH
-        echo "DEBUG: Using managed wine32 for LAUNCHER (WINE=$WINE, PATH updated, WINEARCH unset)"
+        # Keep WINEARCH for compatibility
+        echo "DEBUG: Using managed wine32 for LAUNCHER (WINE=$WINE, PATH updated)"
     else
-        # Clear wine variables for system wine
-        unset WINE WINESERVER WINEARCH
+        # Clear wine variables for system wine but preserve WINEARCH if set
+        unset WINE WINESERVER
         echo "DEBUG: Using system wine for LAUNCHER (architecture $architecture)"
     fi
 }
@@ -30,11 +29,12 @@ set_wine_env() {
         export WINE="$wine32"
         export WINESERVER="$wine32server" 
         export PATH="${wine32%/*}:$PATH"
-        unset WINEARCH
-        echo "DEBUG: Set wine32 environment for INSTALLATION (WINE=$WINE)"
+        # Don't unset WINEARCH - preserve it for proper architecture selection
+        echo "DEBUG: Set wine32 environment for INSTALLATION (WINE=$WINE, WINEARCH=$WINEARCH)"
     else
-        unset WINE WINESERVER WINEARCH
-        echo "DEBUG: Set system wine environment for INSTALLATION"
+        unset WINE WINESERVER
+        # Don't unset WINEARCH - preserve it for proper architecture selection
+        echo "DEBUG: Set system wine environment for INSTALLATION (WINEARCH=$WINEARCH)"
     fi
 }
 
@@ -108,6 +108,7 @@ install_wine_bottle() {
     # Just set up the wine environment for game installation
     
     # Determine architecture from WINEARCH or speechsdk dependency
+    # Preserve existing WINEARCH if already set
     if [[ -z "$WINEARCH" ]]; then
         if [[ "$*" =~ speechsdk ]]; then
             export WINEARCH="win32"